[mmooss]

> Anything that goes to the Mozilla Foundation is not spent on Firefox or Thunderbird (by definition).

Not at all. Much or almost all the Foundation does benefits Firefox. (I think putting Thunderbird in the same sentence is an exaggeration of its importance.)

> I assume (which could totally be wrong) that "total expenses" minus "software development expenses" goes to the Mozilla Foundation

That's a big leap. Salary expense would be their biggest item, I would guess.

[aragilar]

> Not at all. Much or almost all the Foundation does benefits Firefox. (I think putting Thunderbird in the same sentence is an exaggeration of its importance.)

Can you be specific about how the Foundation benefits Firefox (because it can't use money)? As far as I know, the Foundation also never supported Thunderbird's development financially either (due to how they are organised).

As noted, I'm using the values I could quickly find, and wikipedia had a table I could read off. Given the numbers, I expect salaries to be under "software development expenses".